SOLUTION: The drug Valium is eliminated from the bloodstream exponentially with a half-life of 36 hours. Suppose that a patient receives an initial dose of 220 milligrams of Valium at midnig

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Question 1130956: The drug Valium is eliminated from the bloodstream exponentially with a half-life of 36 hours. Suppose that a patient receives an initial dose of 220 milligrams of Valium at midnight.
a. How much Valium is in the patient’s blood at noon on the first day?
b. Estimate when the Valium concentration will reach 50% of its initial level?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
You can answer part b without any calculation because you already know the half-life; so 36 hours to go grom 100% to 50%.

v=220%2A%281%2F2%29%5E%28t%2F36%29------when t is 36, that is one half-life and v becomes 110.


Part (a)
That is 12 hours, for t=12.
Evaluate v.